Wärtsilä Motor Controller Unit

The Wärtsilä Motor Controller Unit is a module designed for local and remote control of starters. It is installed directly inside the starter to manage its operational logic reducing space and weight. The module can be connected to an external keyboard, in order to provide an user interface for local operability.

Thanks to a redundant communication bus, Wärtsilä Motor Controller Unit can be fully integrated with safety system or automation system able to command starters and retrieves information feedback, status or alarms without any needs to internally implement any logic for the starter control.

    Key Benefits
    • Self diagnostic
    • Cost effective
    • Maintenance free
    • Serial line communication
    • All data available to the automation system
    • Less cables necessary in comparison with traditional starters
    Technical Details

    General Conditions
    Operating temperature range -25°C, +70°C
    Relative humidity 95%

    Power supply
    Operative voltage 230 VAC +/- 20%
    Consumption Max 20 W
    Short circuit protection Fuse and
    current limiters for all outputs

    Digital inputs
    Quantity: 20
    Operative voltage 24VDC internal supply
    Insulation All inputs are galvanically isolated by 5KV opto-isolators
    Filters All inputs are filtered using a low-pass filter

    Analog inputs
    Quantity: 3
    Range 4-20 mA
    Operative voltage 18-32 VDC
    Input impedance 250 ohm
    Filters Software filter
    ADC resolution 12 bits
    Precision 0.5%

    Digital Output
    Quantity: 5
    Type Relay, free contact
    Max Switching voltage 400 VAC – 300 VDC
    Max Contact rating chart. 6A, 250 V
    Surge between contact and coil 6 KV
    Max operating speed 20 cpm (at rated load)

    Digital Output
    Quantity: 5
    Type Relay, free contact
    Max Switching voltage 400 VAC – 300 VDC
    Max Contact rating chart. 6A, 250 V
    Surge between contact and coil 6 KV
    Max operating speed 20 cpm (at rated load)

    Digital Output (6-10)
    Quantity: 5
    Type Solid state opto-MOS relay, with supply
    Internal power supply 24 V
    Max load current (continuous) 200 mA
    Isolation Voltage input to output 5 KV
    ON resistance 5 ohm

    Digital Output (11-16)
    Quantity:6
    Type Solid state opto-MOS relay, free contact
    Max Switching voltage 250 V
    Max load current (continuous) 200 mA
    Isolation Voltage input to output 5 KV
    ON resistance 5 ohm

    Analog outputs
    Quantity: 2
    Range 4-20 mA
    Precision 0.5%

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